1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright (C) 2013 Google Inc.
4 * Copyright (C) 2014 Sage Electronics Engineering, LLC.
5 * Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com>
6 *
7 * Modified from coreboot src/soc/intel/baytrail/include/soc/irq_helper.h
8 */
9
10/*
11 * This file intentionally gets included multiple times, to set pic and apic
12 * modes, so should not have guard statements added.
13 */
14
15/*
16 * This file will use irqroute.asl and irqroute.h to generate the ACPI IRQ
17 * routing for the platform being compiled.
18 *
19 * This method uses #defines in irqroute.h along with the macros contained
20 * in this file to generate an IRQ routing for each PCI device in the system.
21 */
22
23#undef PCI_DEV_PIRQ_ROUTES
24#undef PCI_DEV_PIRQ_ROUTE
25#undef ACPI_DEV_IRQ
26#undef PCIE_BRIDGE_DEV
27#undef RP_IRQ_ROUTES
28#undef ROOTPORT_METHODS
29#undef ROOTPORT_IRQ_ROUTES
30#undef RP_METHOD
31
32#if defined(PIC_MODE)
33
34#define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \
35	Package() { ## dev_ ## ffff, pin_, \_SB.PCI0.LPCB.LNK ## pin_name_, 0 }
36
37#define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \
38Name(prefix_ ## func_ ## P, Package() \
39{ \
40	ACPI_DEV_IRQ(0x0000, 0, a_), \
41	ACPI_DEV_IRQ(0x0000, 1, b_), \
42	ACPI_DEV_IRQ(0x0000, 2, c_), \
43	ACPI_DEV_IRQ(0x0000, 3, d_), \
44})
45
46/* define as blank so ROOTPORT_METHODS only gets inserted once */
47#define ROOTPORT_METHODS(prefix_, dev_)
48
49#else /* defined(PIC_MODE) */
50
51#define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \
52	Package() { ## dev_ ## ffff, pin_, 0, PIRQ ## pin_name_ ## _APIC_IRQ }
53
54#define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \
55Name(prefix_ ## func_ ## A, Package() \
56{ \
57	ACPI_DEV_IRQ(0x0000, 0, a_), \
58	ACPI_DEV_IRQ(0x0000, 1, b_), \
59	ACPI_DEV_IRQ(0x0000, 2, c_), \
60	ACPI_DEV_IRQ(0x0000, 3, d_), \
61})
62
63#define ROOTPORT_METHODS(prefix_, dev_) \
64	RP_METHOD(prefix_, dev_, 0) \
65	RP_METHOD(prefix_, dev_, 1) \
66	RP_METHOD(prefix_, dev_, 2) \
67	RP_METHOD(prefix_, dev_, 3) \
68	RP_METHOD(prefix_, dev_, 4) \
69	RP_METHOD(prefix_, dev_, 5) \
70	RP_METHOD(prefix_, dev_, 6) \
71	RP_METHOD(prefix_, dev_, 7)
72
73#endif /* defined(PIC_MODE) */
74
75#define PCI_DEV_PIRQ_ROUTE(dev_, a_, b_, c_, d_) \
76	ACPI_DEV_IRQ(dev_, 0, a_), \
77	ACPI_DEV_IRQ(dev_, 1, b_), \
78	ACPI_DEV_IRQ(dev_, 2, c_), \
79	ACPI_DEV_IRQ(dev_, 3, d_)
80
81#define PCIE_BRIDGE_DEV(prefix_, dev_, a_, b_, c_, d_) \
82	ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \
83	ROOTPORT_METHODS(prefix_, dev_)
84
85#define ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \
86	RP_IRQ_ROUTES(prefix_, 0, a_, b_, c_, d_) \
87	RP_IRQ_ROUTES(prefix_, 1, b_, c_, d_, a_) \
88	RP_IRQ_ROUTES(prefix_, 2, c_, d_, a_, b_) \
89	RP_IRQ_ROUTES(prefix_, 3, d_, a_, b_, c_) \
90	RP_IRQ_ROUTES(prefix_, 4, a_, b_, c_, d_) \
91	RP_IRQ_ROUTES(prefix_, 5, b_, c_, d_, a_) \
92	RP_IRQ_ROUTES(prefix_, 6, c_, d_, a_, b_) \
93	RP_IRQ_ROUTES(prefix_, 7, d_, a_, b_, c_)
94
95#define RP_METHOD(prefix_, dev_, func_)\
96Device (prefix_ ## 0 ## func_) \
97{ \
98	Name(_ADR, dev_ ## 000 ## func_) \
99	Name(_PRW, Package() { 0, 0 }) \
100	Method(_PRT) { \
101		If (PICM) { \
102			Return (prefix_ ## func_ ## A) \
103		} Else { \
104			Return (prefix_ ## func_ ## P) \
105		} \
106	} \
107}
108
109/* SoC specific PIRQ route configuration */
110#include <asm/arch/acpi/irqroute.h>
111